Why developers like Fastify (2024)

FAQs

What are the benefits of fastify? ›

Benefits of using fastify.

Fastify comes with built-in support for fake HTTP injection thanks to light-my-request . First, our code will run inside an asynchronous function, giving us access to async/await. . inject ensures all registered plugins have booted up and our application is ready to test.

In benchmarks, Fastify has shown to be significantly faster than Express in terms of request throughput and response time. However, it's important to note that the performance of your server will depend on a variety of factors, including your hardware, network, and the complexity of your application.

Highly performant: as far as we know, Fastify is one of the fastest web frameworks in town, depending on the code complexity we can serve up to 30 thousand requests per second. Extensible: Fastify is fully extensible via its hooks, plugins and decorators.

Fastify has a more modern ecosystem of plugins, but it might not be important if you've found your favorite set of express tools. As usual, it depends. If something bothers you are with express, give fastify a try to see if it works better. A surprisingly unbiased and fair reply!

Disadvantages of Fastify

Being a relatively newer web framework, Fastify may have a smaller community compared to more established frameworks. This can result in limited availability of community-developed plugins, extensions, and community-driven support resources.

Fastify provides full encapsulation for plug-ins, automatically parses JSON with relatively faster rendering, and provides quick routing. Among other benefits, Fastify also has a cleaner syntax for writing async code in controllers. Fastify is consistently faster than Express by 2–3 seconds.

Fastify includes a built-in router for defining routes and handling requests efficiently. @nestjs/core provides performance optimizations and is suitable for building scalable and efficient applications. Fastify is built for high performance and low overhead, making it one of the fastest web frameworks available.

Fastify provides a good alternative framework for Nest because it solves design issues in a similar manner to Express. However, fastify is much faster than Express, achieving almost two times better benchmarks results. A fair question is why does Nest use Express as the default HTTP provider?

A benchmark made by Fastify, shows that Express. js— a minimal and flexible Node. js web application framework with a robust set of features for web and mobile— can handle approx 15,000 requests per second and the basic HTTP module, 70K requests per second. This is very fast.

How popular is fastify? ›

Is fastify popular? The npm package fastify receives a total of 1,648,219 weekly downloads. As such, fastify popularity was classified as a key ecosystem project. Visit the popularity section on Snyk Advisor to see the full health analysis.

Fastify, on the other hand, entered the scene in 2017. Designed as a high-performance framework with a focus on speed and low overhead, it's quickly gaining traction and is backed by an enthusiastic community of developers. It is built by Matteo Collina, who is well-known for his contributions to the Node.

Fastify uses a schema-based routing system, where routes are defined using JSON schemas. This allows for easy validation and serialization of request and response payloads. On the other hand, hapi uses a more traditional callback-based routing system, where routes are defined using JavaScript code.

You can register an entire Express application and make it work with Fastify.

register creates a new Fastify context, which means that if you perform any changes on the Fastify instance, those changes will not be reflected in the context's ancestors. In other words, encapsulation!

Fastify comes with built-in support for fake http injection thanks to light-my-request . To inject a fake http request, use the inject method: fastify.